Initial commit
Added sensor properties saving into file

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rename : src/main/java/org/lanseg/sensors/data/ObservationSource.java => src/main/java/org/lanseg/sensors/data/api/ObservationSource.java
rename : src/main/java/org/lanseg/sensors/data/FileObservationSource.java => src/main/java/org/lanseg/sensors/data/impl/FileObservationSource.java
rename : src/main/java/org/lanseg/sensors/utils/Serializer.java => src/main/java/org/lanseg/sensors/utils/Utils.java
Added sensors serialization
Added sensor storage
Fixed data alignment
Added sample backend
Now really added backend
Added loading sensors settings
Splitted into two projects
Removed old backend folder
Cleanup
Added demo source with random data
Added sensor details (location, description, whatever)

--HG--
rename : frontend/src/main/java/org/lanseg/thatpage/utils/GeoUtils.java => backend/src/main/java/org/lanseg/sensors/geo/GeoUtils.java
Added demo for frontend
Added spring configuration for sensor sources
Refactoring
Added controllers support